I would go the VS Code path were I to do it over, could still make it a plugin I suppose...
I would say keep iterating on the docs. It's unclear to me what problem this solves and what it looks like in practice. It's probably too technical out of the gate (above the fold). One of the best things you can do is look at successful projects to see what they are doing. Take things you like from them, test it with potential users. It's very hard to step back from your own project to simplify and reduce the explanations.
One question I do have is, where is the schema?